Department of Botany, University of Iowa, Iowa City, Iowa 52242.
Plant Physiol. 1976 Oct;58(4):573-5. doi: 10.1104/pp.58.4.573.
Photorespiration rates in tissue cultures of a C(4) plant, Portulaca oleracea, were compared to those in tissue cultures of a C(3) plant, Streptanthus tortuosus. The C(4) plant tissue cultures have one-half to one-third the photorespiration rate of the C(3) plant tissue cultures and respond to varying O(2) concentrations in a manner typical of C(4) plants. The results suggest that the lack of detectable photorespiration in C(4) plants is not related to leaf anatomy.
比较了 C(4) 植物马齿苋和 C(3) 植物扭蒴苣苔的组织培养物的光合作用速率。C(4) 植物组织培养物的光合作用速率为 C(3) 植物组织培养物的一半到三分之一,并且对不同的 O(2)浓度的反应方式与 C(4)植物典型的方式相似。结果表明,C(4)植物中检测不到光合作用,这与叶片解剖结构无关。